I sometimes get carried away and assume that all bees live in Amerika. I suppose for the few states that just had their pills removed from the shelves and are limited to the total amount of grams purchased per month at the pharmacy, this source will now come into play.
Then again, obviously there are bees from other countries that this may help in the long run. For this my apologies.
Go for the syrup with pseudo and trip exclusively, it is out there.
Warm NP's do a better job at pulling adulterants. When Swim was doing his experiments he added the syrup to Xylene and warmed it all up together in beaker. Did this 3x and decanted the gakk ridden Xylene.
You can dilute the syrup 50/50 with distilled water. Swim added Xylene and poured in NaOH a teaspoon at a time over a 20 minute period until ph hit 13.
Stir it really good, shaking produces emulsions.
Pretty much like ITP already said with the exception of using warm NP's to do the syrup washing.
Swim got back like a half g of pseudo - .6 per bottle.
If that works for you, go for it. More Powder to ya!
People have mentioned NaOH and ammonia as bases, Maybee Na carbonate like in the tetra trap will work as well with heat?
Shorty mentioned gassing, with further "theoretical" experience since that time with other extractions, can almost guarantee that is the path one should now take. Yields may improve?
Not discouraging anybee from further pioneering a once explored route. If that is all you have access to and money is no object, then go for it!
Perfect it and help the have nots...
More thoughts: Steam distillation? PP/SS pipebomb extraction?
US bees, if $3-4 for a half gram is acceptable, you are more die-hard then Swim.